Installing ZCO To install ZCO, you must download the ZCO .msi installation file to your computer. The ZCO .msi installation file can be obtained from your system administrator. The installer walks you through the process of installing ZCO. 1. If Outlook is open, close it. 2. Double-click the ZCO .msi installation file on your computer. 3. Click Run to execute the installer. 4. Click Next. 5. Read the end-user license agreement and click I accept the terms in the License Agreement. 6. Click Next. 7. To begin the installation, click Next. 8. When finished installing, the Installation Complete dialog displays. Click Close.